|Publication number||US4248025 A|
|Application number||US 06/064,757|
|Publication date||Feb 3, 1981|
|Filing date||Aug 8, 1979|
|Priority date||Aug 8, 1979|
|Also published as||CA1109225A, CA1109225A1|
|Publication number||06064757, 064757, US 4248025 A, US 4248025A, US-A-4248025, US4248025 A, US4248025A|
|Inventors||Richard A. Kleine, Warren J. Byers|
|Original Assignee||Unarco Industries, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (63), Classifications (6), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present invention relates to a knock down tapered pole for power-line use and the like. The present invention more particularly relates to a pole that is comprised of a series of superimposed pole sections. Each of the sections is comprised of a series of U-shaped bent-corner plates of uniform cross-sectional thickness and a plurality of trapezoidal-shaped flat plates positioned between the bent-corner plates and secured therewith by means of fasteners.
By providing a construction of the type generally outlined above, the shipping costs for the transportation of the components of the pole can be materially reduced as compared to conventional type poles now being sold in the marketplace. As an example, expressway lighting poles are of a substantial length and many of them are of a tubular construction having long lengths which are very expensive to ship and which make the handling of the same difficult as compared with a knock down tapered pole of the type herein disclosed. Another pole shown in the prior art is illustrated in U.S. Pat. No. 3,276,182, where the pole is of an extruded construction and is comprised of elongated lengths of material where the marginal edges are secured by a tongue and groove construction. A pole of the type shown in the U.S. Pat. No. 3,276,182 is not of a knock down construction where the overall length of the pole can be reduced to facilitate shipment.
An important object of this invention is to provide a new and improved knock down tapered pole for sundry uses such as for a power-line or for lighting in interchange of an expressway and the like.
According to important features of this invention, we have provided a knock down tapered pole for power-line use that is comprised of a series of vertically connected sections. Each of the sections is individually comprised of a spaced series of generally U-shaped bent-corner plates of uniform cross-sectional thickness. The corner plates have divergently extending marginal legs with holes being positioned in longitudinal spaced relation along each of the margins. A plurality of spaced trapezoidal-shaped flat plates are each positioned between a pair of the corner plates. The plates have nonparallel marginal edges which converge in a direction extending towards a top end of the pole and which diverge in a direction extending towards a lower end of the pole. A series of fasteners are provided for coaction with the holes for joining opposite margins of the flat plates along the nonparallel marginal edges in assembled relation with the marginal legs of the corner plates.
According to other features of this invention, the trapezoidal-shaped flat plates are each provided with upper and lower edges and these edges on each section are positioned in parallel, vertically-spaced relation relative to one another. When the components are assembled, the upper and lower edges on the trapezoidal-shaped flat plates are engaged in butt-facing edgewise relation with corresponding edges on an adjacent trapezoidal-shaped flat plate.
Accordingly, another important object of this invention is to provide a new and improved knock down tapered pole wherein the sections have a series of vertically-spaced joints with the joints on each section being arranged in staggered relation so as to provide a reinforced construction.
A further feature of this invention concerns a tapered pole having a spaced series of generally U-shaped bent-corner plates in combination with a plurality of spaced trapezoidal-shaped flat plates and where holes are provided in each of the plates with the geometry of the holes being so arranged so that fasteners can be used to secure the components in assembled relation.
Other objects, features and advantages of the invention will be readily apparent from the following description of certain representative embodiments thereof, taken in conjunction with the accompanying drawings although variations and modifications may be effected without departing from the spirit and scope of the novel concepts embodied in the disclosure and in which:
FIG. 1 is a perspective view of a high-level lighting pole for use on an interchange of an expressway and the like;
FIG. 2 is an enlarged side elevation of one of the three sides of the pole shown in FIG. 1, only with the lighting structure omitted;
FIG. 3 is an enlarged elevation of another side of the pole shown in FIG. 2, only as viewed from a different vantage point;
FIG. 4 is an enlarged side elevation similar to FIGS. 2 and 3, only viewing a third side of the pole;
FIG. 5 is a transverse section of the pole taken along a line identified at V--V, shown in FIG. 4, looking in the direction indicated by the arrows;
FIG. 6 is an enlarged transverse section of the poles taken along a line identified at VI--VI, shown in FIG. 4, looking in the direction indicated by the arrows.
FIG. 7 is an enlarged exploded section as viewed on the line VII--VII, looking in the direction indicated by the arrows; and
FIG. 8 is a transverse section similar to FIG. 5, only illustrating a modified form of the invention.
The reference numeral 10 indicates generally a knock down tapered pole which has a base 11 that is bolted at 12 to a concrete support indicated generally at 13. Disposed at the top end of the pole 10 is a battery of lights 14 such as would typically be used to light up the interchange of an expressway and the like. The pole 10 can be used for any suitable purpose such as for a power-line and the like. The pole 10 is comprised of a series of vertically superimposed sections 15, 16 and 17.
Each of the sections 15, 16 and 17 is comprised of a spaced series of generally U-shaped bent-corner plates 18, 19 and 20. The corner plates have divergently extending marginal legs 18a--18a, 19a--19a and 20a--20a. Holes 18b, 19b and 20b are positioned in longitudinally spaced relation along the marginal legs of the associated corner plate.
A plurality of trapezoidal-shaped flat plates 21, 22 and 23 are each positioned between a pair of the associated corner plates, as shown in FIG. 5. The corner plates are provided with nonparallel marginal edges 21a--21a, 22a--22a and 23a--23a. It will be noted that the edges 21a--21a, 22a--22a and 23a--23a converge in the direction extending towards a lower end of the pole 10 and diverge in a direction extending towards a lower end of the pole. These plates are further provided with holes that are so positioned as to be oriented for cooperative association with corresponding holes 18b, 19b and 20b in the corner plates 18, 19 and 20. These flat plate holes are indicated at 21b, 22b and 23b.
A series of nut-and-bolt fasteners as indicated at 25 are provided for coaction with the aligned holes in the bent-corner plates 18, 19 and 20 and the flat plates 21, 22 and 23. The fasteners 25 include threaded bolts 25a and nuts 25b which coact in the securement of the bent-corner plates 18, 19 and 20 with the flat plates 21, 22 and 23. In this respect, the flat plates 21 and 22 and 23 are all disposed inside the tube defined by the pole 10. When the corner plates and the flat plates are bolted, they coact to form a generally equal-sided triangular shaped post with cropped or cut-off corners. The bolted construction allows for a knocked-down shipment of the components to the erection site in a comparatively small package. The components of this structure are fabricated in lengths of approximately 20 feet, excepting for the top and bottom sections. By using the bolted construction of this post structure, abutting faces of the plates are tightly clamped together providing frictional interplay between the faces of the bolted elements, which is effective to greatly reduce the shear loads placed upon the bolts. Thus far, the use of rivets for a structure of this type have not been found to be desirable since rivets tend to relax from their initial hold upon cooling and generally provide an inadequate connection between the plates. Any looseness between the plates would diminish the use of the post sections for if the post is subjected to excessive sway, high shear forces would be placed on the rivets. The post sections are tapered approximately 1 to 11/2 inches per 10-foot of length. This taper provides for the connection of the bent-corner plates in a converging fashion and the holes that are provided in the edge portions or margins of the bent plates and the flat plates are positioned to accommodate the connecting fasteners 25 comprised of threaded bolts 25a plus nuts 25b. The hole spacings in the margins of the bent-corner plates and in the flat plates are arranged to accommodate assembly of the components of the post so that seams between the various 20-foot lengths of the post components are spaced in maximum interval relative to the seams of adjacent plate sections. These seams between the upper and lower edges of the trapezoidal plates are indicated by the reference numerals 26. Seams 27 are provided between upper and lower U-shaped plates or on the abutting stacked post sections. The seams 26 and 27 are all staggered in a parallel nonplanar relation to maximize the strength of the post. By this arrangement, seams between upper and lower edges of the associated butt-engaged vertically-extending plates are located in different elevational planes. As illustrated, drive bolts 25a are spline locked in the bolt hole of the flat plate to prevent turning and to facilitate assembly and eliminate the need for securing the bolt heads while tightening down nuts 25b thereon. This arrangement of providing the drive bolts is useful to facilitate attachment of the flat plate to be assembled with the U-shaped plates. In addition, hooks 28 are provided to aid in drawing the last flat plate into aligned position with the associated U-shaped plates 18 and 19. The bolted posts are preferably assembled with the flat-tapered plates inward of the bent-corner plates for ascetic reasons. As will be observed from FIG. 5, in the preferred embodiment each of the bent-corner plates is provided with a flat leg and two diverging flat legs which extend therefrom as previously described.
In FIG. 8, is shown a modified post construction 40. The post 40 is provided with a series of vertically superimposed sections similar to the sections 15, 16 and 17 with only one of the sections being shown at 41. Each of the posts is provided with a series of generally U-shaped bent-corner plates 48, 49 and 50. The corner plates have divergently extending marginal legs 48a--48a, 49a--49a and 50a--50a. In addition, a series of trapezoidal-shaped flat plates 51, 52 and 53 are each positioned between a pair of the associated corner plates, as shown in FIG. 8. The corner plates are provided with nonparallel marginal edges similar to the edges 21a--21a, etc. as disclosed in FIG. 5, but which edges are lapped on the outside of the post 40 rather than on the inside as shown in FIG. 5. Welded fasteners 55 are provided for securing the components in assembled relation in the manner as previously described in connection with the manner in which the fasteners 25 coact with the pole 10 for securing the U-shaped bent-corner plates with the trapezoidal-shaped flat plates, also as illustrated in FIG. 5 and 8, respectively.
It will be understood that variations and modifications may be effected without departing from the spirit and scope of the novel concepts of this invention.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3196990 *||Mar 23, 1961||Jul 27, 1965||Mc Graw Edison Co||Tapered structural member and method of making the same|
|US3217459 *||Sep 17, 1962||Nov 16, 1965||Meyer Roy E||Tower structure|
|US3276182 *||Aug 26, 1963||Oct 4, 1966||Mc Graw Edison Co||Tapered structural member|
|US3728837 *||Feb 25, 1971||Apr 24, 1973||A Kiefer||Modular structures|
|US3969849 *||May 12, 1975||Jul 20, 1976||Franklin D E||Self-supporting lighting fixture|
|US4069626 *||Mar 26, 1976||Jan 24, 1978||Yarema Die & Engineering Co.||Steeple|
|FR1008156A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4557353 *||May 11, 1983||Dec 10, 1985||Pichon Michel A||Service elevator for construction|
|US5117607 *||Oct 23, 1991||Jun 2, 1992||Tri-Steel Industries Inc.||Sectional hollow metal pole structure|
|US5317844 *||Sep 23, 1992||Jun 7, 1994||Tri-Steel Industries Inc.||Universal pole anchoring device|
|US6001034 *||Nov 6, 1997||Dec 14, 1999||Huffy Corporation||Basketball backboard support pole|
|US6094881 *||May 25, 1999||Aug 1, 2000||Con/Span Bridge Systems Inc.||Box shaped structural member with pultruded flanges and connecting webs|
|US7116282||Oct 14, 2003||Oct 3, 2006||John Trankina||Tower reinforcement|
|US7160085||Feb 12, 2003||Jan 9, 2007||Mecal Applied Mechanics B.V.||Wind turbine|
|US7387497 *||Apr 12, 2005||Jun 17, 2008||Cone Matthew D||Adapter|
|US7392624||Jan 26, 2004||Jul 1, 2008||Dwight Eric Kinzer||Modular load-bearing structural column|
|US7464512||Mar 10, 2004||Dec 16, 2008||Perina Mark J||Hollow structural member|
|US7627994||Jun 11, 2007||Dec 8, 2009||Demirkan James R||Quick anchor (Universal Pole and Post Anchoring System)|
|US7739843 *||Apr 28, 2008||Jun 22, 2010||Alejandro Cortina-Cordero||Pre-stressed concrete tower for wind power generators|
|US7877935 *||Jul 17, 2008||Feb 1, 2011||Vestas Wind Systems A/S||Wind turbine tower, a wind turbine, a wind turbine tower elevator and a method for assembling a wind turbine tower|
|US8046972 *||Oct 7, 2010||Nov 1, 2011||Tower Reinforcement, Inc.||Tower reinforcement apparatus and method|
|US8051609||Dec 22, 2010||Nov 8, 2011||Vestas Wind Systems A/S||Wind turbine tower and method of assembling|
|US8136329||Oct 8, 2008||Mar 20, 2012||Willis Jeffrey O||Tower structure and method of assembling|
|US8156712||Sep 8, 2011||Apr 17, 2012||Tower Reinforcement, Inc.||Tower reinforcement apparatus and method|
|US8172204 *||May 23, 2005||May 8, 2012||M.D.S. Handels-Und Montagen Gesellschaft m.b.H.||Road safety barrier|
|US8250833||Jun 12, 2008||Aug 28, 2012||Siemens Aktiengesellschaft||Wind turbine tower and method for constructing a wind turbine tower|
|US8424269 *||Mar 22, 2012||Apr 23, 2013||Tower Reinforcement, Inc.||Tower reinforcement apparatus and method|
|US8544214 *||Dec 7, 2010||Oct 1, 2013||General Electric Company||Wind turbine tower assembly and method for assembling the same|
|US8607533||Nov 26, 2012||Dec 17, 2013||Crown Castle Usa Inc.||Tower reinforcement apparatus and method|
|US8622639 *||Jun 3, 2008||Jan 7, 2014||Durst Phototechnik Digital Technology Gmbh||Method of producing a print head support and a print head support|
|US8713896 *||Feb 28, 2012||May 6, 2014||Northstar Endeavors, Llc||Tower structure and method of assembling|
|US8720161 *||Mar 7, 2008||May 13, 2014||Postensa Wind Structures S.A. De C.V.||Mast for a wind turbine|
|US8782998 *||Jun 12, 2008||Jul 22, 2014||Safety Product||Street pole and method for placing the street pole|
|US9249597 *||Nov 4, 2010||Feb 2, 2016||Siemens Aktiengesellschaft||Tower construction|
|US9290959 *||Mar 12, 2015||Mar 22, 2016||e.Construct.USA, LLC||Site-cast coupled prestressed concrete wind tower|
|US20040154236 *||Jan 26, 2004||Aug 12, 2004||Kinzer Dwight Eric||Modular load-bearing structural column|
|US20040154901 *||Feb 3, 2004||Aug 12, 2004||Kinzer Dwight Eric||Conveying system for filling multiple storage bins|
|US20050129504 *||Feb 12, 2003||Jun 16, 2005||De Roest Anton H.||Wind turbine|
|US20060228218 *||Apr 12, 2005||Oct 12, 2006||Cone Matthew D||Adapter|
|US20070044424 *||Jul 14, 2006||Mar 1, 2007||Goldsworthy W B||Composite poles and methods for forming the same|
|US20070194292 *||May 23, 2005||Aug 23, 2007||Luigi Serafin||Road safety barrier|
|US20070294955 *||Jan 14, 2005||Dec 27, 2007||Corus Staal Bv||Tower for a Wind Turbine, Prefabricated Metal Wall Part for Use in a Tower for a Wind Turbine and Method for Constructing a Tower for a Wind Turbine|
|US20080308707 *||Jun 12, 2008||Dec 18, 2008||Goossens Urbanus Paul Marguerite||Street pole and method for placing the street pole|
|US20090001243 *||Jun 3, 2008||Jan 1, 2009||Peter Weingartner||Method of producing a support and a support|
|US20090016897 *||Jul 17, 2008||Jan 15, 2009||Borge Olgaard||Wind turbine tower, a wind turbine, a wind turbine tower elevator and a method for assembling a wind turbine tower|
|US20090021019 *||Jun 12, 2008||Jan 22, 2009||Siemens Aktiengesellschaft||Wind turbine tower and method for constructing a wind turbine tower|
|US20090031639 *||Apr 28, 2008||Feb 5, 2009||Cortina Cordero Alejandro||Pre-stressed concrete tower for wind power generators|
|US20090031646 *||Jul 16, 2007||Feb 5, 2009||Stelco Inc.||Utility pole|
|US20090090069 *||Oct 8, 2008||Apr 9, 2009||Jeffrey Willis||Tower structure and method of assembling|
|US20100071301 *||Mar 7, 2008||Mar 25, 2010||Mecal Applied Mechanics B.V.||Mast for a Wind Turbine|
|US20100313497 *||Aug 19, 2008||Dec 16, 2010||Jesper Kofoed Jensen||Wind Turbine Tower, A Wind Turbine And A Method For Assembling A Wind Turbine Tower|
|US20110023412 *||Oct 7, 2010||Feb 3, 2011||Kopshever Michael J Sr||Tower Reinforcement Apparatus and Method|
|US20110088331 *||Dec 22, 2010||Apr 21, 2011||Borge Olgaard||Wind Turbine Tower, A Wind Turbine, A Wind Turbine Tower Elevator And A Method For Assembling A Wind Turbine Tower|
|US20110138721 *||Dec 7, 2010||Jun 16, 2011||Bharat Sampathkumaran Bagepalli||Wind turbine tower assembly and method for assembling the same|
|US20110219719 *||Mar 10, 2010||Sep 15, 2011||Israel Stol||Transition-joints for joining dissimilar materials|
|US20120036798 *||Apr 14, 2010||Feb 16, 2012||Giebel Holger||Tower for a Wind Power Installation|
|US20120047840 *||Apr 14, 2010||Mar 1, 2012||Prass Gregor||Tower for a Wind Power Installation|
|US20120151864 *||Feb 28, 2012||Jun 21, 2012||Jeffrey Willis||Tower structure and method of assembling|
|US20120180427 *||Mar 22, 2012||Jul 19, 2012||Tower Reinforcement, Inc.||Tower Reinforcement Apparatus and Method|
|US20140311057 *||Mar 5, 2014||Oct 23, 2014||News Sports Microwave Rental Inc, dba NSM Surveillance||Maximum Strength, Reduce Weight Telescoping Mast with Interlocking Structural Elements|
|CN100465396C||Jan 27, 2004||Mar 4, 2009||德怀特·埃里克·金策||A modular load-bearing structural column|
|CN101328864B||Jun 19, 2008||Apr 24, 2013||西门子公司||Wind turbine tower and method for constructing a wind turbine tower|
|CN101815834B||Mar 31, 2008||Jan 23, 2013||安全产品公司||Street pole and method for placing the street pole|
|CN103422700A *||Aug 21, 2013||Dec 4, 2013||李劲||波纹管塔|
|EP2006471A1 *||Jun 20, 2007||Dec 24, 2008||Siemens Aktiengesellschaft||Wind turbine tower and method for constructing a wind turbine tower|
|WO1988005850A1 *||Feb 9, 1988||Aug 11, 1988||Colin John Freeman||Improvements in or relating to elongate hollow structural members|
|WO1994028250A1 *||May 30, 1994||Dec 8, 1994||Tri Steel Usa Inc||Distribution pole|
|WO2004072402A1 *||Jan 27, 2004||Aug 26, 2004||Dwight Eric Kinzer||Modular load-bearing structural column|
|WO2007095940A1 *||Feb 20, 2006||Aug 30, 2007||Vestas Wind Systems A/S||A wind turbine tower, a wind turbine and a method for assembling a wind turbine tower|
|WO2012004182A1 *||Jun 30, 2011||Jan 12, 2012||Ab Varmförzinkning||A yieldable lighting column|
|U.S. Classification||52/845, 174/45.00R, 52/40|
|Feb 8, 1993||AS||Assignment|
Owner name: UNR INDUSTRIES, INC., ILLINOIS
Free format text: MERGER;ASSIGNOR:UNARCO INDUSTRIES, INC.;REEL/FRAME:006420/0657
Effective date: 19921207